settings/accessibility/
accessibility_controller.rs

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1// Copyright 2019 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4use crate::accessibility::types::AccessibilityInfo;
5use crate::base::{Merge, SettingInfo, SettingType};
6use crate::handler::base::Request;
7use crate::handler::setting_handler::persist::{controller as data_controller, ClientProxy};
8use crate::handler::setting_handler::{
9    controller, ControllerError, IntoHandlerResult, SettingHandlerResult,
10};
11use settings_storage::device_storage::{DeviceStorage, DeviceStorageCompatible};
12use settings_storage::storage_factory::{NoneT, StorageAccess};
13
14use async_trait::async_trait;
15
16impl DeviceStorageCompatible for AccessibilityInfo {
17    type Loader = NoneT;
18    const KEY: &'static str = "accessibility_info";
19}
20
21impl From<AccessibilityInfo> for SettingInfo {
22    fn from(info: AccessibilityInfo) -> Self {
23        SettingInfo::Accessibility(info)
24    }
25}
26
27pub(crate) struct AccessibilityController {
28    client: ClientProxy,
29}
30
31impl StorageAccess for AccessibilityController {
32    type Storage = DeviceStorage;
33    type Data = AccessibilityInfo;
34    const STORAGE_KEY: &'static str = AccessibilityInfo::KEY;
35}
36
37#[async_trait(?Send)]
38impl data_controller::Create for AccessibilityController {
39    async fn create(client: ClientProxy) -> Result<Self, ControllerError> {
40        Ok(AccessibilityController { client })
41    }
42}
43
44#[async_trait(?Send)]
45impl controller::Handle for AccessibilityController {
46    async fn handle(&self, request: Request) -> Option<SettingHandlerResult> {
47        match request {
48            Request::Get => Some(
49                self.client
50                    .read_setting_info::<AccessibilityInfo>(fuchsia_trace::Id::new())
51                    .await
52                    .into_handler_result(),
53            ),
54            Request::SetAccessibilityInfo(info) => {
55                let id = fuchsia_trace::Id::new();
56                let original_info = self.client.read_setting::<AccessibilityInfo>(id).await;
57                assert!(original_info.is_finite());
58                // Validate accessibility info contains valid float numbers.
59                if !info.is_finite() {
60                    return Some(Err(ControllerError::InvalidArgument(
61                        SettingType::Accessibility,
62                        "accessibility".into(),
63                        format!("{info:?}").into(),
64                    )));
65                }
66                let result = self.client.write_setting(original_info.merge(info).into(), id).await;
67                Some(result.into_handler_result())
68            }
69            _ => None,
70        }
71    }
72}
settings/accessibility/accessibility_controller.rs

settings/accessibility/
accessibility_controller.rs
